不明白的是你。这句话是什么意思？

Prosecutors technically have an obligation to present “exculpatory” evidence—evidence that suggests that a defendant might not be guilty—though there is not much other than the prosecutor’s conscience to enforce this rule

你现在把以前一些检察官故意违规来当成正确的做法说目前检察官不正确。呵呵。请问是谁不明白呀？